Shuttle-box motion for looms.



No. 654,920. Patented July 3|, |900.

EQL. SARGENT. y SHUTTLE BOX MOTIUN FOR LOOMS.

(Application filed Mar. 28, 1900.)

(No Model.) 2 Sheets-Sheet I.

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` No. 654,920. Fammi iulysg; |900;l

E. L.` SARGENT. SHUTTLE Box Marlou Fon Looms.-

(Appucariommed max-Q 2e. 19001.)

N STATES PATENT OFFICE.

m -wm EDWARD l L.

Vsini-gentir,-,on{rAunjrorn MAssAoHusErjrs, AssieNoR To 'r1-1n M-AsoNVMAcHmE woRKs, orv SAME PLACE.

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SPECIFICATION Yfmfi'nig'para afzetten-Patent No. 654,920, Stated July 31, lecci;

.itpiicanon met Mardi 26,1960. senti No. 10,125. (Nmina To a/ZZ whom 4it may concern.; Beit known that I, EDWARD L. SARGENT, a citizen of the United States, and a resident of Taunton, county of Bristol, State of Massar-j chusetts, have invented an Improvement in Shuttle-Box Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts. l

This invention relates to box-motions for looms of that type wherein the movements of the shuttle-box are governed by or through a gear having a shifting or sliding tooth which moved into operative position constitutes a part of the series of peripheral teeth of the gear and eects rotation of the latter and when withdrawn into inoperative position prevents such rotation. One form of box-motion of this character forms a portion of the subject-matter of United States Patent No. 596,898, dated January 4, 1898; but therein, as in other devices of a similar character, the chain-motion operates the means for shifting the tooth, whereas in my present invention such chain-motion merelyoperates to exert a su ficiently-restraining eect to maintain the tooth in the desired position, the shifting thereof being otherwise effected. By the con- 3o struction hereinafter, described all danger of instability or uncertainty of action isi-practically eliminated. In the various devices of this character now in use, in which the func- 'tion ofthe sliding tooth is to throw into or 3 5 out of operation the mechanism governed by the gear of which said Vtooth forms a part, a shifting-lever is employed operatively connected with the chain-motion, and when it is desired to shift the tooth the lever is lifted by means of the chain, and when the gear is to be operated again the lever is dropped, usually with the assistance of a spring, thus bringing the weight and strain of the shifting mechanisrnupon the chain. By my presentinvention the forcel communicated by the chain-motionis employedto prevent the tooth from shifting, the strain of shifting being con-V fined entirely to the gear of which it forms a part. Three important advantages accrue fromsuch construction-viz., a positive locking of the shifting, tooth in position, so that when in mesh it is practically a solid part of the gear; the simplicity, strength, and durability of parts forming the gear and tooth,l and the self-shifting feature of the niechani ism, as will more clearly appear hereinafter.. Figure 1 is a side elevation ofa portion of a loom, showing the shuttle-box motion and pattern device with one 'embodiment of my invention applied thereto; Fig. 2 is a top or 6o plan View of a portion of the mechanism shown in Fig. l below the line a: the loom side being partly in section. Fig. 3 is an enlarged inner side elevation of the gear with the shifting tooth and the controlling means 1 for the shifting mechanism, the parts being shown in position to prevent shifting at the rst dwell, but ready to start. Fig. 4 is a similar view, but showing the sliding toothgear as rotated one hundred and eighty de- 7o grees and with the controlling means'in the second dwell position. Fig. 5 is a like view, but showing the sliding tooth in operative position ready for the second start, the control` ling means having returned to the full-line position, Fig. 3. Fig. `6 is a front elevation of the gear having the shifting or sliding tooth. Fig. 7 isa top or Vplan view of the parts shown in Fig. 3. Fig. 8 is a front viewV of the sliding-tooth' gear on the line S S, Fig. 7, 8o with the cap removed, but showing the shifter in elevation. Fig. 9 is a partial central longitudinal sectional view of Fig. 7 on the line 9 9; and Fig. 10 is a transverse-section on the line l0 l0, Fig. 6, the sliding tooth being, 85

however, shown in elevation.

Referring to Fig. l, the loom-frame A'of suitable shape to contain the working parts, the cam-shaft a, mounted in the frame and having a crank-disk ot', provided with a wrist- 9o pin a2, to which is jointed the lower end of the connecting-rod a3 for imparting motion to .the chain and multiplying mechanism M, mounted on the arch A of the frame, the lay A3, the shuttle-box f, supported on the liftrod f, which is jointed at its lower end to one arm f2 of a bell-crank lever pivoted at f3 on the frame, may be and are substantially as shown and described in the patent referred to and operating in substantially the same roo manner. The arm f2 is upturned at f4, while the arm f 5 of the bell-crank leveris fulcrumed at f3 and provided with a shoulder f6, held against the part f4 bya strong spring S, connecting said part f4 and an oppositely1ex--v tended prong f7 of the arm f5, the parts or extensions f4 f7 forming a species of sepa` `rable yoke.

The two members f2 f5 of the lever are thus normally locked together by the spring S; but should any'undue stress be brought upon the said members in the operation of the loom the spring will yield and a smash will be prevented. The arm or mem-` ber f5 is forked to straddle a block fm upon a crankfpin m on the bridge-m4 of the faceplate fm2.` d

I have shown in Figs. 1 and 2 a bracket C, secured to the loom side A, having a bearing c, Fig. 2, for the shaft a and a bearing c for e the hub m6 of the toothed wheel or gear m7,

to which hub, at its outer end, is secured the face-plate fm2, the bracket having below the' said bearing c' outwardly-extended upright guides c2. These guides receive a slide-block c3, having atits upper end a roller c", Fig. 1, adapted to enter one-or the other of the opposite ldepressions mi in the face-plate 'm2, a sprin'g SX, partly broken out in Fig. 1, acting on the bottom of the slide-block to hold the roller c4 against the peripheryY of the faceplate,fthe roller serving to retain the plate in one `or the other of the positions into which it is moved. A mutilated gear m12@ is secured to the crank-shaft a adjacent the gear m7, as

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clearly shown in Fig. 2, the number of -teeth being such as. to give one-half a revolution only to the gear 'm7 when in engagement there-l with,vit being understood that the cam-shaft a rotates continuously in the direction of the arrow 25, Fig. 1. Referring now more 4particularly to Figs. 6 to 10, the gear m7 is diametrically slotted at m12 to receive a shifting tooth-carrier shown as a slide-bar m13,- provided `at eachV end with a tooth m14, which? teeth are adapted toenter spaces between the two series of teeth'forming the gear mi, the .length of the said bar from one to the other extremity being herein shown such that when.' one tooth m14 is in operative position the. corresponding opposite tooth will` be retracte'd'into inoperative position, Figsr and 8 A circular `recessed cap m15 is secured to f the face of the gear m7 by suitable means, as

by screws 30, Fig; 6, extended into the gear alt 'opposite sides of the slot/m12, it being manif fest from Fig. 9 that the outer face of the-- slide-bar 'm13 is Hush with the face of the gear.

A shifter,.shown'as a heavy block of metal fn, l is mounted to slide in the cap across the face of the toothecarrier or slidebar, the sides of `the'shift/er having parallel cam-faces n", Fig.

8, substantially midway between its ends, which in said figure are shown as opposit'ely offset from the central longitudinal axis lthere-A of, the cams nx being inclined relatively to such axis. bar or barrier are arranged to contact. fwfith said cams', movement of the shifter at right angles to the slidesbar moving it in one or the Lugs14 on 4the face yof the slide-` other direction,.so that, Viewing Fig. 8, if the' shifter n is moved down into dotted-line position the slide-bar m13 will be moved to the left and the left-hand tooth m14 will be moved into operative' position. The Weight of the shifter n is sufficient'when permitted ,to move it into dotted-line position, Fig.

`6 and 9,) the-length of the 4slot being such ,that when the boss is at either end thereof the shifter n will be in one of its extreme positions. A stud n2 extends some distance from the boss eccentric to the center thereof and nearer the adjacent extremity of the shifter fn, this stud being engaged by the controller now to be described, which governs the shifting of the sliding tooth, and thereby the operation ofthe shuttle-box motion. y

On a bracket A6, secured to the loculi-frame, and in a bearing A5 is fulcrumed a shaft 40, to which the controller (shown as practically a bell-crank d d') is. secured, the arm d being connected by a wire d? with the inner end of a box-motion lever e, controlled by the pattern-surface P of the chain-motion M, Fig. l1, of any usual or well-known construction.

' The lover eis fast on a rock-shaft eX and normallyvmaintained with the inner end depressed by means of a weight W, Fig. 1, also the position, Figs. 1 and 3,-into the position shown in Fig, 4. At its upper en d the .arm d is enlarged to form a head d3, which swings ina ypath closelyl adjacent `and infront of the cap m15, (see Figs. 2 and 7 the inner face of the head having two cam-grooves d4, d5 tshown in dotted lines, Figs. 3, 4, and 5) extending from a nearly-circular recess de to the edge of the head, the grooves being adapted to receive the stud n2, secured to the shifter.

, Referring now to'Fig. 3, the bellscrank'c'ontroller is innormal position,maintained therein by its own Weight, the inner end of the lever e resting on the plain portion of the pattern-surface, and at suchtime the stud n2 of the shifter is in its highest position, corresponding to that shown in Fig. v8, and it is-so maintained becauseA the stud is intheouter end of the cam-slot d4 of the controller, and the tooth mi4 nearest the mutilated gear m120 is retracted, sothat said gear will not1 rotate the'gear mi: Now if it is desired to operate IOO IIO

the box-motion a pin or projection on the wire or link d2 swings the controller to the left into dotted-line position, Fig. 3, and the weight of the shifter n causes it to drop into dotted-line position, the cam slot or groove d4 permitting it to descend, the shifter acting to shift theslide bar or carrier m13 to the left to bring the tooth m14 into operative position, and the driven gear m7 will be rotated through one hundred and eighty degrees. Such halfrevolution will cause the stud 'n2 to travel in4 a circular path in the recess d6 from above the axial center of the gear m7 to directly below it, as in Fig. 4, andout of the inner en d of the groove d4, it being also manifest that the boss n is `inthe now upper end of the slot 18, and as the empty gap in the teeth of gear mi is then brought opposite gear or driver mm said gears will beout of mesh and will so continue as long as the controller remains in this second dwell position for any desired number of picks. 1f, however, the box motion is to be again operated, the controller is released and Will move into normal position, Fig. 5; but the stud 97.2 will travel from the inner end of cam-groove (Z5 to its outer end, the weight of the shifter fn, causing it to drop, bringing the-boss n to the lower end of slot 18, the stud passing out of the groove d5, as in' Fig. 5; but the shifter has also moved the tooth-carrier m13 tothe left, and the left-hand tooth m14 will be moved into operative position, as in Fig.' 5, and the driving and driven gears mm m7 will be again in mesh. As before, -lthe latter gear will be rotated through one hundred and eighty degrecs, carrying the several parts intothe first dwelling position, Fig.3, the stud n2 traveling around the edge cam d? between the outer ends of the grooves d4 d5 and into the outer end of the former, and the rotation will cease' until the controller is againmoved, as has been described, from dwelling position, full lines, Fig. 3, into second dwelling position, dotted lines in said Fig. 3, it being under-4 stood, however, that such movement of the controller permits the operation of the shifter to effect starting of the gear fm". A lateral lug or stop son the head of the controller brings up against the cap when the controller reaches the second dwell position, Fig. 4, and so limits its movement when swung in such direction byor through the action of the pattern-surface.

In Fig. 1 a spring S5 is shown forming a part of the link or wire d2, tending to prevent jerking and allowing some play shouldY the parts not operate smoothly, thus preventing smashing of the mechanism. t

From the foregoing description it will be manifest that the shifting of the'tooth-carrier is not effected by the direct operationof the pattern mechanism, but by the weight of the shifter, and the only strain brought upon said mechanism is that necessary to eifect the slight movement of the controller from full to dotted line position, Fig.` 3, thus relieving the pattern mechanism of all'strairi necessary cally a'solid part of the gear When in operation.

Referring to Fig. 8, it will be seen that the shifter n just past the end of the cam-face 71X, so that the tooth will be locked in positionso long as the shifter is prevented from moving 4relatively to the tooth-carrier m13, and the shifter is so held from such movement at the proper time by the controller.

My invention may be modified or rearrangedin various particulars Without departing from the spirit and scope thereof.

Having fully described my invention, what I claim as new, and desire to secure by Letters 1. In a loom, a rotating shaft; a crank; a shuttle-boit; a two-part lever intermediate said crank and shuttle-box to impart motion to the latter by and from the former, s aidA members of the lever having a common ful- Crum and provided with opposite extensions,

a spring directly connecting said extensions forming a separable yoke, and a shoulder on one member normally maintained by the `spring in engagement with the other member.

2. The combination with a moving toothed member constituting a driver, of a driven gear having a plurality of toothless spaces,4

rigidly connected, radially-shiftable teeth for llug 14 nearest the projected shiftable tooth `is opposite the straight side portion of the IOO said spaces, and a shifter normally actuated by gravity to move said teeth into androut o operative position. l

3. The combination with a rotatable driv-l` ing-gear, of a driven gear having atoothless space, a shiftable tooth carriedA thereby, and a shifter normally actuated by gravity to move said tooth into or outof operative position.

4. The combinationwith a rotatable driving-gear, of a driven gear having a toothless e,

space, a shiftable tooth carried thereby, a shifter normally actuated by gravity to move saidtooth into or out of operative position, and a controller to govern the movement of the shifter.

5. The combination with a movable toothed driving member, of a driven gear having a plurality of toothless spaces,l rigidlycon nected and radially-movable teeth carried by said gear, a gravit},actuated shifter for said teeth,`also mounted on the gear, and means to control the gravity-induced movements of the shifter. V

`6. The combination with a movable toothed driving member, of a driven gearhaving a diametral slot in its face and toothless spaces opposite the ends thereof, `rigidlyconnected IIO and radially movable teeth in the slot a shifter movable at right angles to said teeth,y

to effect their radial movement, anda cap se#4 I cured to said gear and having guideways for the shifter.

7, The combination with a movable toothed y driving member, of a driven gear having a plurality of toothless spaces, rigidly .connected and radially-movable teeth carriedby said gear, a gravity-actuated shifter for said teeth, a slotted cap on the gear, having guideways for the shifter, and a boss on the shifter,

movable in said sl-ot in the cap, to limit the movement of the shifter. f

8`; The combination with a movable toothed driving member, of a driven gear having a plurality of toothless spaces, rigidly connected and radially-movable teeth carried by said gear, a gravity-actuated shifterfor said teeth, a slotted cap on Vthe gear, having guideways for the shifter, a boss on the shifter and extended into the slot, to limit the movement of the shifter, and meansto control the gravity-induced movement of the shifter relatively to the gear.

9. The combination with a rotatable driving-gear, of a. vdriven gear havinga toothless space, a radially-movable tooth therefor and a gravity-actuated shifter for the tooth, both movablebodily with the gear and movable relatively to each other, and means to control the gravity-induced movement of the shifter.Y

10; The combination with a rotatable driving-gear, of a driven gear having a toothless space, av shiftable tooth carried thereby, a

gravity-actuated shifter to move lsaid tooth radially,`both being mounted on the gear, a

a cam portionto engage said stud and govern the gravity-induced movement of the shifter, and means to maintain the controller in position to lock the shifter from operative movement.

11. In a loom, the combination with amovingv driving-gear; a driven gear havinga plurality of toothless spaces; a shuttle-box, and operating connections between it and said driven gear; of rigidly-connected, radiallymovable teeth for said toothless spaces, a shifter normally actuated by gravity to move the teeth into and out of position for engagement with the driving-gear, and a controller todeterminel the time of operation ofv the shifter. f 12. In a loom, the combination with a moving driving-gear; a driven gear havinga =plurality'of toothless spaces; a shuttle-box, and

operating connections between it and said drivenl gear; of rigidly-connected, radiallytions ytherefor between it and the driven gear g' of shifting teeth for said spaces, mounted on the gear,a shifter also mounted on the gear toA move said teeth intoy and out of position n for engagement with thedriving-gear, as required, and a `controller to at times lock the shifter from operative movement'.

14. In a loom, the combination with a moving driving-gear; a diametrically-slotted driven gear having toothless spaces at the ends of the slots, a slide-bar in said slot, havingI a tooth at each end, a shuttle-box, and operating connections between it and the driven gear, of a gravity-actuated shifter mounted on the driven gear and operatively connected with-said slide-bar, movement of the shifter effecting movement of the slide-.bar to place one tooth in operative position and the other in inoperative position, whereby intermitting rotation will be transmitted to the driven gear and movement 'imparted to the shuttle-box);

15. In a loom, the combination with a moving driving-gear; a driven gear having a toothless space; the shuttle-box and its operating mechanism actuated by the driven gear; of a movable tooth for the latter, a gravity-actuated, sliding shifter mounted on the driven gear and movable relatively to the tooth, to shift the latter into and out of position for engagement with the driving-gear, and means to control the gravity-induced movement of the shifter.

16. In a loom,`the combination with a moving driving-gear; a driven gearhavingatooth= less space; the shuttle-box; and its operating mechanism actuated by the driven gear 3 of a movable tooth for the latter; a shifter normally actuated by gravity to shift the tooth into and out of position for engagement with the driving-gear, a controller to govern `the gravity-induced movement of said shifter, a pattern-surface, and connections between it `and the controller, to determine the moveless space; the shuttle-box; and'its operating mechanism actuated by the driven gear; of a movablel tooth for the latter, a shifter nor- IOO IIO

mallyactuated by gravity toshift the tooth the driving-gear, a controller to at times lock the shifter from operative movement, and a pattern-surface operatively'connected with the controller, to eect movement of the latter into locking or unlocking position.`

18. The combination with amoving toothed member constitu ting a driver, of a driven gear j having a toothless space, a shiftable tooth,.a

shifter to move it into and out of operative position, said tooth and shifter both being mounted on -the gear, and `means controlled by the position of the shifter to lock the tooth in operative position.

19. The combination with a moving toothed member constituting adriver, of a driven gear tooth, also mounted on the gear, means to p prevent movement of the shifter relatively to having a toothless space, a shiftable tooth on lthe gear, a relatively-movable shifter for said Io erating projection on the tooth, movement of the shifter eeoting movement of the tooth i i e Aby cooperative engagement of the cam-face and lug, the locking-face engaging said projection when the tooth is in operative position and maintaining the tooth operative.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

` EDW. L. SARGENT. Witnesses:

HORACE A. CRossMAN, GEORGE E. CHANDLER.

oorreetion in Letters Patent Ne. 654,920.

It hereby certified that in Letters Patent No. 654,920, granted July 31, 1900, upon the application of Edward L. Sargent, of Taunton, Massachusetts, for an improvement in Shuttle-B0X Motions for Looms, an error appears in thev printed speoieation requiring correction, as follows: 0n page 3, line 95, the clause forming a separable yoke, should be stricken out and inserted after the Word extensions, line-93, as noW numbered, same page; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Oee. i

Signed, eountersigned, and sealed this 14th day of August, A. D., 1900.

F. L. CAMPBELL, Assistant Secretary of the Interior.

[SEAL] Countersigned VALTER H. CHAMBERLIN,

Acting Commissioner of Patents. 

